Inspection And Cleaning; Topping Up The Coolant; Fault Tracing - ESAB ESABMig 400t Instruction Manual

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7.1

Inspection and cleaning

Check regularly that the power source is free from dirt.
The power source should be regularly blown clean using dry compressed air at
reduced pressure. More frequently in dirty environments.
Otherwise the air inlet/outlet may become blocked and cause overheating. To avoid
this you can use an airfilter.
The airfilter is an accessory. Ordering number on page 45.
7.2

Topping up the coolant

We recommend a 50/50 % mixture of water and ethylene glycol.
8

FAULT TRACING

Try these recommended checks and inspections before sending for an authorised
service technican.
Type of fault
No arc.
Welding current is interrupted
during welding
The thermal overload trips
operate frequently
Poor welding performance.
ba36d1ea
Check that the mains power supply switch is turned on.
S
Check that the welding current supply and return cables are
S
correctly connected.
Check that the correct current value is set.
S
Check to see whether the MCB has tripped.
S
Check whether the thermal overload trip has operated
S
(indicated by the orange lamp on the front)
Check the main power supply fuses.
S
Check to see whether the air filters are clogged.
S
Make sure that you are not exceeding the rated data for the
S
power source (i.e. that the unit is not being overloaded).
Check that the welding current supply and return cables are
S
correctly connected.
Check that the correct current value is set.
S
Check that the correct welding wires are being used.
S
Check the main power supply fuses.
S
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